2 * Copyright 2002-2005, Instant802 Networks, Inc.
3 * Copyright 2005-2006, Devicescape Software, Inc.
4 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
5 * Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
11 * utilities for mac80211
14 #include <net/mac80211.h>
15 #include <linux/netdevice.h>
16 #include <linux/export.h>
17 #include <linux/types.h>
18 #include <linux/slab.h>
19 #include <linux/skbuff.h>
20 #include <linux/etherdevice.h>
21 #include <linux/if_arp.h>
22 #include <linux/bitmap.h>
23 #include <linux/crc32.h>
24 #include <net/net_namespace.h>
25 #include <net/cfg80211.h>
26 #include <net/rtnetlink.h>
28 #include "ieee80211_i.h"
29 #include "driver-ops.h"
36 /* privid for wiphys to determine whether they belong to us or not */
37 void *mac80211_wiphy_privid
= &mac80211_wiphy_privid
;
39 struct ieee80211_hw
*wiphy_to_ieee80211_hw(struct wiphy
*wiphy
)
41 struct ieee80211_local
*local
;
44 local
= wiphy_priv(wiphy
);
47 EXPORT_SYMBOL(wiphy_to_ieee80211_hw
);
49 u8
*ieee80211_get_bssid(struct ieee80211_hdr
*hdr
, size_t len
,
50 enum nl80211_iftype type
)
52 __le16 fc
= hdr
->frame_control
;
54 /* drop ACK/CTS frames and incorrect hdr len (ctrl) */
58 if (ieee80211_is_data(fc
)) {
59 if (len
< 24) /* drop incorrect hdr len (data) */
62 if (ieee80211_has_a4(fc
))
64 if (ieee80211_has_tods(fc
))
66 if (ieee80211_has_fromds(fc
))
72 if (ieee80211_is_mgmt(fc
)) {
73 if (len
< 24) /* drop incorrect hdr len (mgmt) */
78 if (ieee80211_is_ctl(fc
)) {
79 if(ieee80211_is_pspoll(fc
))
82 if (ieee80211_is_back_req(fc
)) {
84 case NL80211_IFTYPE_STATION
:
86 case NL80211_IFTYPE_AP
:
87 case NL80211_IFTYPE_AP_VLAN
:
90 break; /* fall through to the return */
98 void ieee80211_tx_set_protected(struct ieee80211_tx_data
*tx
)
101 struct ieee80211_hdr
*hdr
;
103 skb_queue_walk(&tx
->skbs
, skb
) {
104 hdr
= (struct ieee80211_hdr
*) skb
->data
;
105 hdr
->frame_control
|= cpu_to_le16(IEEE80211_FCTL_PROTECTED
);
109 int ieee80211_frame_duration(enum ieee80211_band band
, size_t len
,
110 int rate
, int erp
, int short_preamble
)
114 /* calculate duration (in microseconds, rounded up to next higher
115 * integer if it includes a fractional microsecond) to send frame of
116 * len bytes (does not include FCS) at the given rate. Duration will
119 * rate is in 100 kbps, so divident is multiplied by 10 in the
120 * DIV_ROUND_UP() operations.
123 if (band
== IEEE80211_BAND_5GHZ
|| erp
) {
127 * N_DBPS = DATARATE x 4
128 * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS)
129 * (16 = SIGNAL time, 6 = tail bits)
130 * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext
133 * 802.11a - 17.5.2: aSIFSTime = 16 usec
134 * 802.11g - 19.8.4: aSIFSTime = 10 usec +
135 * signal ext = 6 usec
137 dur
= 16; /* SIFS + signal ext */
138 dur
+= 16; /* 17.3.2.3: T_PREAMBLE = 16 usec */
139 dur
+= 4; /* 17.3.2.3: T_SIGNAL = 4 usec */
140 dur
+= 4 * DIV_ROUND_UP((16 + 8 * (len
+ 4) + 6) * 10,
141 4 * rate
); /* T_SYM x N_SYM */
144 * 802.11b or 802.11g with 802.11b compatibility:
145 * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime +
146 * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0.
148 * 802.11 (DS): 15.3.3, 802.11b: 18.3.4
149 * aSIFSTime = 10 usec
150 * aPreambleLength = 144 usec or 72 usec with short preamble
151 * aPLCPHeaderLength = 48 usec or 24 usec with short preamble
153 dur
= 10; /* aSIFSTime = 10 usec */
154 dur
+= short_preamble
? (72 + 24) : (144 + 48);
156 dur
+= DIV_ROUND_UP(8 * (len
+ 4) * 10, rate
);
162 /* Exported duration function for driver use */
163 __le16
ieee80211_generic_frame_duration(struct ieee80211_hw
*hw
,
164 struct ieee80211_vif
*vif
,
165 enum ieee80211_band band
,
167 struct ieee80211_rate
*rate
)
169 struct ieee80211_sub_if_data
*sdata
;
172 bool short_preamble
= false;
176 sdata
= vif_to_sdata(vif
);
177 short_preamble
= sdata
->vif
.bss_conf
.use_short_preamble
;
178 if (sdata
->flags
& IEEE80211_SDATA_OPERATING_GMODE
)
179 erp
= rate
->flags
& IEEE80211_RATE_ERP_G
;
182 dur
= ieee80211_frame_duration(band
, frame_len
, rate
->bitrate
, erp
,
185 return cpu_to_le16(dur
);
187 EXPORT_SYMBOL(ieee80211_generic_frame_duration
);
189 __le16
ieee80211_rts_duration(struct ieee80211_hw
*hw
,
190 struct ieee80211_vif
*vif
, size_t frame_len
,
191 const struct ieee80211_tx_info
*frame_txctl
)
193 struct ieee80211_local
*local
= hw_to_local(hw
);
194 struct ieee80211_rate
*rate
;
195 struct ieee80211_sub_if_data
*sdata
;
199 struct ieee80211_supported_band
*sband
;
201 sband
= local
->hw
.wiphy
->bands
[frame_txctl
->band
];
203 short_preamble
= false;
205 rate
= &sband
->bitrates
[frame_txctl
->control
.rts_cts_rate_idx
];
209 sdata
= vif_to_sdata(vif
);
210 short_preamble
= sdata
->vif
.bss_conf
.use_short_preamble
;
211 if (sdata
->flags
& IEEE80211_SDATA_OPERATING_GMODE
)
212 erp
= rate
->flags
& IEEE80211_RATE_ERP_G
;
216 dur
= ieee80211_frame_duration(sband
->band
, 10, rate
->bitrate
,
217 erp
, short_preamble
);
218 /* Data frame duration */
219 dur
+= ieee80211_frame_duration(sband
->band
, frame_len
, rate
->bitrate
,
220 erp
, short_preamble
);
222 dur
+= ieee80211_frame_duration(sband
->band
, 10, rate
->bitrate
,
223 erp
, short_preamble
);
225 return cpu_to_le16(dur
);
227 EXPORT_SYMBOL(ieee80211_rts_duration
);
229 __le16
ieee80211_ctstoself_duration(struct ieee80211_hw
*hw
,
230 struct ieee80211_vif
*vif
,
232 const struct ieee80211_tx_info
*frame_txctl
)
234 struct ieee80211_local
*local
= hw_to_local(hw
);
235 struct ieee80211_rate
*rate
;
236 struct ieee80211_sub_if_data
*sdata
;
240 struct ieee80211_supported_band
*sband
;
242 sband
= local
->hw
.wiphy
->bands
[frame_txctl
->band
];
244 short_preamble
= false;
246 rate
= &sband
->bitrates
[frame_txctl
->control
.rts_cts_rate_idx
];
249 sdata
= vif_to_sdata(vif
);
250 short_preamble
= sdata
->vif
.bss_conf
.use_short_preamble
;
251 if (sdata
->flags
& IEEE80211_SDATA_OPERATING_GMODE
)
252 erp
= rate
->flags
& IEEE80211_RATE_ERP_G
;
255 /* Data frame duration */
256 dur
= ieee80211_frame_duration(sband
->band
, frame_len
, rate
->bitrate
,
257 erp
, short_preamble
);
258 if (!(frame_txctl
->flags
& IEEE80211_TX_CTL_NO_ACK
)) {
260 dur
+= ieee80211_frame_duration(sband
->band
, 10, rate
->bitrate
,
261 erp
, short_preamble
);
264 return cpu_to_le16(dur
);
266 EXPORT_SYMBOL(ieee80211_ctstoself_duration
);
268 void ieee80211_propagate_queue_wake(struct ieee80211_local
*local
, int queue
)
270 struct ieee80211_sub_if_data
*sdata
;
271 int n_acs
= IEEE80211_NUM_ACS
;
273 if (local
->hw
.queues
< IEEE80211_NUM_ACS
)
276 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
) {
282 if (test_bit(SDATA_STATE_OFFCHANNEL
, &sdata
->state
))
285 if (sdata
->vif
.cab_queue
!= IEEE80211_INVAL_HW_QUEUE
&&
286 local
->queue_stop_reasons
[sdata
->vif
.cab_queue
] != 0)
289 for (ac
= 0; ac
< n_acs
; ac
++) {
290 int ac_queue
= sdata
->vif
.hw_queue
[ac
];
292 if (ac_queue
== queue
||
293 (sdata
->vif
.cab_queue
== queue
&&
294 local
->queue_stop_reasons
[ac_queue
] == 0 &&
295 skb_queue_empty(&local
->pending
[ac_queue
])))
296 netif_wake_subqueue(sdata
->dev
, ac
);
301 static void __ieee80211_wake_queue(struct ieee80211_hw
*hw
, int queue
,
302 enum queue_stop_reason reason
)
304 struct ieee80211_local
*local
= hw_to_local(hw
);
306 trace_wake_queue(local
, queue
, reason
);
308 if (WARN_ON(queue
>= hw
->queues
))
311 if (!test_bit(reason
, &local
->queue_stop_reasons
[queue
]))
314 __clear_bit(reason
, &local
->queue_stop_reasons
[queue
]);
316 if (local
->queue_stop_reasons
[queue
] != 0)
317 /* someone still has this queue stopped */
320 if (skb_queue_empty(&local
->pending
[queue
])) {
322 ieee80211_propagate_queue_wake(local
, queue
);
325 tasklet_schedule(&local
->tx_pending_tasklet
);
328 void ieee80211_wake_queue_by_reason(struct ieee80211_hw
*hw
, int queue
,
329 enum queue_stop_reason reason
)
331 struct ieee80211_local
*local
= hw_to_local(hw
);
334 spin_lock_irqsave(&local
->queue_stop_reason_lock
, flags
);
335 __ieee80211_wake_queue(hw
, queue
, reason
);
336 spin_unlock_irqrestore(&local
->queue_stop_reason_lock
, flags
);
339 void ieee80211_wake_queue(struct ieee80211_hw
*hw
, int queue
)
341 ieee80211_wake_queue_by_reason(hw
, queue
,
342 IEEE80211_QUEUE_STOP_REASON_DRIVER
);
344 EXPORT_SYMBOL(ieee80211_wake_queue
);
346 static void __ieee80211_stop_queue(struct ieee80211_hw
*hw
, int queue
,
347 enum queue_stop_reason reason
)
349 struct ieee80211_local
*local
= hw_to_local(hw
);
350 struct ieee80211_sub_if_data
*sdata
;
351 int n_acs
= IEEE80211_NUM_ACS
;
353 trace_stop_queue(local
, queue
, reason
);
355 if (WARN_ON(queue
>= hw
->queues
))
358 if (test_bit(reason
, &local
->queue_stop_reasons
[queue
]))
361 __set_bit(reason
, &local
->queue_stop_reasons
[queue
]);
363 if (local
->hw
.queues
< IEEE80211_NUM_ACS
)
367 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
) {
373 for (ac
= 0; ac
< n_acs
; ac
++) {
374 if (sdata
->vif
.hw_queue
[ac
] == queue
||
375 sdata
->vif
.cab_queue
== queue
)
376 netif_stop_subqueue(sdata
->dev
, ac
);
382 void ieee80211_stop_queue_by_reason(struct ieee80211_hw
*hw
, int queue
,
383 enum queue_stop_reason reason
)
385 struct ieee80211_local
*local
= hw_to_local(hw
);
388 spin_lock_irqsave(&local
->queue_stop_reason_lock
, flags
);
389 __ieee80211_stop_queue(hw
, queue
, reason
);
390 spin_unlock_irqrestore(&local
->queue_stop_reason_lock
, flags
);
393 void ieee80211_stop_queue(struct ieee80211_hw
*hw
, int queue
)
395 ieee80211_stop_queue_by_reason(hw
, queue
,
396 IEEE80211_QUEUE_STOP_REASON_DRIVER
);
398 EXPORT_SYMBOL(ieee80211_stop_queue
);
400 void ieee80211_add_pending_skb(struct ieee80211_local
*local
,
403 struct ieee80211_hw
*hw
= &local
->hw
;
405 struct ieee80211_tx_info
*info
= IEEE80211_SKB_CB(skb
);
406 int queue
= info
->hw_queue
;
408 if (WARN_ON(!info
->control
.vif
)) {
409 ieee80211_free_txskb(&local
->hw
, skb
);
413 spin_lock_irqsave(&local
->queue_stop_reason_lock
, flags
);
414 __ieee80211_stop_queue(hw
, queue
, IEEE80211_QUEUE_STOP_REASON_SKB_ADD
);
415 __skb_queue_tail(&local
->pending
[queue
], skb
);
416 __ieee80211_wake_queue(hw
, queue
, IEEE80211_QUEUE_STOP_REASON_SKB_ADD
);
417 spin_unlock_irqrestore(&local
->queue_stop_reason_lock
, flags
);
420 void ieee80211_add_pending_skbs_fn(struct ieee80211_local
*local
,
421 struct sk_buff_head
*skbs
,
422 void (*fn
)(void *data
), void *data
)
424 struct ieee80211_hw
*hw
= &local
->hw
;
429 spin_lock_irqsave(&local
->queue_stop_reason_lock
, flags
);
430 while ((skb
= skb_dequeue(skbs
))) {
431 struct ieee80211_tx_info
*info
= IEEE80211_SKB_CB(skb
);
433 if (WARN_ON(!info
->control
.vif
)) {
434 ieee80211_free_txskb(&local
->hw
, skb
);
438 queue
= info
->hw_queue
;
440 __ieee80211_stop_queue(hw
, queue
,
441 IEEE80211_QUEUE_STOP_REASON_SKB_ADD
);
443 __skb_queue_tail(&local
->pending
[queue
], skb
);
449 for (i
= 0; i
< hw
->queues
; i
++)
450 __ieee80211_wake_queue(hw
, i
,
451 IEEE80211_QUEUE_STOP_REASON_SKB_ADD
);
452 spin_unlock_irqrestore(&local
->queue_stop_reason_lock
, flags
);
455 void ieee80211_stop_queues_by_reason(struct ieee80211_hw
*hw
,
456 unsigned long queues
,
457 enum queue_stop_reason reason
)
459 struct ieee80211_local
*local
= hw_to_local(hw
);
463 spin_lock_irqsave(&local
->queue_stop_reason_lock
, flags
);
465 for_each_set_bit(i
, &queues
, hw
->queues
)
466 __ieee80211_stop_queue(hw
, i
, reason
);
468 spin_unlock_irqrestore(&local
->queue_stop_reason_lock
, flags
);
471 void ieee80211_stop_queues(struct ieee80211_hw
*hw
)
473 ieee80211_stop_queues_by_reason(hw
, IEEE80211_MAX_QUEUE_MAP
,
474 IEEE80211_QUEUE_STOP_REASON_DRIVER
);
476 EXPORT_SYMBOL(ieee80211_stop_queues
);
478 int ieee80211_queue_stopped(struct ieee80211_hw
*hw
, int queue
)
480 struct ieee80211_local
*local
= hw_to_local(hw
);
484 if (WARN_ON(queue
>= hw
->queues
))
487 spin_lock_irqsave(&local
->queue_stop_reason_lock
, flags
);
488 ret
= test_bit(IEEE80211_QUEUE_STOP_REASON_DRIVER
,
489 &local
->queue_stop_reasons
[queue
]);
490 spin_unlock_irqrestore(&local
->queue_stop_reason_lock
, flags
);
493 EXPORT_SYMBOL(ieee80211_queue_stopped
);
495 void ieee80211_wake_queues_by_reason(struct ieee80211_hw
*hw
,
496 unsigned long queues
,
497 enum queue_stop_reason reason
)
499 struct ieee80211_local
*local
= hw_to_local(hw
);
503 spin_lock_irqsave(&local
->queue_stop_reason_lock
, flags
);
505 for_each_set_bit(i
, &queues
, hw
->queues
)
506 __ieee80211_wake_queue(hw
, i
, reason
);
508 spin_unlock_irqrestore(&local
->queue_stop_reason_lock
, flags
);
511 void ieee80211_wake_queues(struct ieee80211_hw
*hw
)
513 ieee80211_wake_queues_by_reason(hw
, IEEE80211_MAX_QUEUE_MAP
,
514 IEEE80211_QUEUE_STOP_REASON_DRIVER
);
516 EXPORT_SYMBOL(ieee80211_wake_queues
);
518 void ieee80211_flush_queues(struct ieee80211_local
*local
,
519 struct ieee80211_sub_if_data
*sdata
)
523 if (!local
->ops
->flush
)
526 if (sdata
&& local
->hw
.flags
& IEEE80211_HW_QUEUE_CONTROL
) {
531 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++)
532 queues
|= BIT(sdata
->vif
.hw_queue
[ac
]);
533 if (sdata
->vif
.cab_queue
!= IEEE80211_INVAL_HW_QUEUE
)
534 queues
|= BIT(sdata
->vif
.cab_queue
);
537 queues
= BIT(local
->hw
.queues
) - 1;
540 ieee80211_stop_queues_by_reason(&local
->hw
, IEEE80211_MAX_QUEUE_MAP
,
541 IEEE80211_QUEUE_STOP_REASON_FLUSH
);
543 drv_flush(local
, queues
, false);
545 ieee80211_wake_queues_by_reason(&local
->hw
, IEEE80211_MAX_QUEUE_MAP
,
546 IEEE80211_QUEUE_STOP_REASON_FLUSH
);
549 void ieee80211_iterate_active_interfaces(
550 struct ieee80211_hw
*hw
, u32 iter_flags
,
551 void (*iterator
)(void *data
, u8
*mac
,
552 struct ieee80211_vif
*vif
),
555 struct ieee80211_local
*local
= hw_to_local(hw
);
556 struct ieee80211_sub_if_data
*sdata
;
558 mutex_lock(&local
->iflist_mtx
);
560 list_for_each_entry(sdata
, &local
->interfaces
, list
) {
561 switch (sdata
->vif
.type
) {
562 case NL80211_IFTYPE_MONITOR
:
563 case NL80211_IFTYPE_AP_VLAN
:
568 if (!(iter_flags
& IEEE80211_IFACE_ITER_RESUME_ALL
) &&
569 !(sdata
->flags
& IEEE80211_SDATA_IN_DRIVER
))
571 if (ieee80211_sdata_running(sdata
))
572 iterator(data
, sdata
->vif
.addr
,
576 sdata
= rcu_dereference_protected(local
->monitor_sdata
,
577 lockdep_is_held(&local
->iflist_mtx
));
579 (iter_flags
& IEEE80211_IFACE_ITER_RESUME_ALL
||
580 sdata
->flags
& IEEE80211_SDATA_IN_DRIVER
))
581 iterator(data
, sdata
->vif
.addr
, &sdata
->vif
);
583 mutex_unlock(&local
->iflist_mtx
);
585 EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces
);
587 void ieee80211_iterate_active_interfaces_atomic(
588 struct ieee80211_hw
*hw
, u32 iter_flags
,
589 void (*iterator
)(void *data
, u8
*mac
,
590 struct ieee80211_vif
*vif
),
593 struct ieee80211_local
*local
= hw_to_local(hw
);
594 struct ieee80211_sub_if_data
*sdata
;
598 list_for_each_entry_rcu(sdata
, &local
->interfaces
, list
) {
599 switch (sdata
->vif
.type
) {
600 case NL80211_IFTYPE_MONITOR
:
601 case NL80211_IFTYPE_AP_VLAN
:
606 if (!(iter_flags
& IEEE80211_IFACE_ITER_RESUME_ALL
) &&
607 !(sdata
->flags
& IEEE80211_SDATA_IN_DRIVER
))
609 if (ieee80211_sdata_running(sdata
))
610 iterator(data
, sdata
->vif
.addr
,
614 sdata
= rcu_dereference(local
->monitor_sdata
);
616 (iter_flags
& IEEE80211_IFACE_ITER_RESUME_ALL
||
617 sdata
->flags
& IEEE80211_SDATA_IN_DRIVER
))
618 iterator(data
, sdata
->vif
.addr
, &sdata
->vif
);
622 EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic
);
625 * Nothing should have been stuffed into the workqueue during
626 * the suspend->resume cycle. If this WARN is seen then there
627 * is a bug with either the driver suspend or something in
628 * mac80211 stuffing into the workqueue which we haven't yet
629 * cleared during mac80211's suspend cycle.
631 static bool ieee80211_can_queue_work(struct ieee80211_local
*local
)
633 if (WARN(local
->suspended
&& !local
->resuming
,
634 "queueing ieee80211 work while going to suspend\n"))
640 void ieee80211_queue_work(struct ieee80211_hw
*hw
, struct work_struct
*work
)
642 struct ieee80211_local
*local
= hw_to_local(hw
);
644 if (!ieee80211_can_queue_work(local
))
647 queue_work(local
->workqueue
, work
);
649 EXPORT_SYMBOL(ieee80211_queue_work
);
651 void ieee80211_queue_delayed_work(struct ieee80211_hw
*hw
,
652 struct delayed_work
*dwork
,
655 struct ieee80211_local
*local
= hw_to_local(hw
);
657 if (!ieee80211_can_queue_work(local
))
660 queue_delayed_work(local
->workqueue
, dwork
, delay
);
662 EXPORT_SYMBOL(ieee80211_queue_delayed_work
);
664 u32
ieee802_11_parse_elems_crc(u8
*start
, size_t len
, bool action
,
665 struct ieee802_11_elems
*elems
,
670 bool calc_crc
= filter
!= 0;
671 DECLARE_BITMAP(seen_elems
, 256);
674 bitmap_zero(seen_elems
, 256);
675 memset(elems
, 0, sizeof(*elems
));
676 elems
->ie_start
= start
;
677 elems
->total_len
= len
;
681 bool elem_parse_failed
;
688 elems
->parse_error
= true;
694 case WLAN_EID_SUPP_RATES
:
695 case WLAN_EID_FH_PARAMS
:
696 case WLAN_EID_DS_PARAMS
:
697 case WLAN_EID_CF_PARAMS
:
699 case WLAN_EID_IBSS_PARAMS
:
700 case WLAN_EID_CHALLENGE
:
702 case WLAN_EID_ERP_INFO
:
703 case WLAN_EID_EXT_SUPP_RATES
:
704 case WLAN_EID_HT_CAPABILITY
:
705 case WLAN_EID_HT_OPERATION
:
706 case WLAN_EID_VHT_CAPABILITY
:
707 case WLAN_EID_VHT_OPERATION
:
708 case WLAN_EID_MESH_ID
:
709 case WLAN_EID_MESH_CONFIG
:
710 case WLAN_EID_PEER_MGMT
:
715 case WLAN_EID_CHANNEL_SWITCH
:
716 case WLAN_EID_EXT_CHANSWITCH_ANN
:
717 case WLAN_EID_COUNTRY
:
718 case WLAN_EID_PWR_CONSTRAINT
:
719 case WLAN_EID_TIMEOUT_INTERVAL
:
720 case WLAN_EID_SECONDARY_CHANNEL_OFFSET
:
721 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH
:
723 * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible
724 * that if the content gets bigger it might be needed more than once
726 if (test_bit(id
, seen_elems
)) {
727 elems
->parse_error
= true;
735 if (calc_crc
&& id
< 64 && (filter
& (1ULL << id
)))
736 crc
= crc32_be(crc
, pos
- 2, elen
+ 2);
738 elem_parse_failed
= false;
743 elems
->ssid_len
= elen
;
745 case WLAN_EID_SUPP_RATES
:
746 elems
->supp_rates
= pos
;
747 elems
->supp_rates_len
= elen
;
749 case WLAN_EID_DS_PARAMS
:
751 elems
->ds_params
= pos
;
753 elem_parse_failed
= true;
756 if (elen
>= sizeof(struct ieee80211_tim_ie
)) {
757 elems
->tim
= (void *)pos
;
758 elems
->tim_len
= elen
;
760 elem_parse_failed
= true;
762 case WLAN_EID_CHALLENGE
:
763 elems
->challenge
= pos
;
764 elems
->challenge_len
= elen
;
766 case WLAN_EID_VENDOR_SPECIFIC
:
767 if (elen
>= 4 && pos
[0] == 0x00 && pos
[1] == 0x50 &&
769 /* Microsoft OUI (00:50:F2) */
772 crc
= crc32_be(crc
, pos
- 2, elen
+ 2);
774 if (elen
>= 5 && pos
[3] == 2) {
775 /* OUI Type 2 - WMM IE */
777 elems
->wmm_info
= pos
;
778 elems
->wmm_info_len
= elen
;
779 } else if (pos
[4] == 1) {
780 elems
->wmm_param
= pos
;
781 elems
->wmm_param_len
= elen
;
788 elems
->rsn_len
= elen
;
790 case WLAN_EID_ERP_INFO
:
792 elems
->erp_info
= pos
;
794 elem_parse_failed
= true;
796 case WLAN_EID_EXT_SUPP_RATES
:
797 elems
->ext_supp_rates
= pos
;
798 elems
->ext_supp_rates_len
= elen
;
800 case WLAN_EID_HT_CAPABILITY
:
801 if (elen
>= sizeof(struct ieee80211_ht_cap
))
802 elems
->ht_cap_elem
= (void *)pos
;
804 elem_parse_failed
= true;
806 case WLAN_EID_HT_OPERATION
:
807 if (elen
>= sizeof(struct ieee80211_ht_operation
))
808 elems
->ht_operation
= (void *)pos
;
810 elem_parse_failed
= true;
812 case WLAN_EID_VHT_CAPABILITY
:
813 if (elen
>= sizeof(struct ieee80211_vht_cap
))
814 elems
->vht_cap_elem
= (void *)pos
;
816 elem_parse_failed
= true;
818 case WLAN_EID_VHT_OPERATION
:
819 if (elen
>= sizeof(struct ieee80211_vht_operation
))
820 elems
->vht_operation
= (void *)pos
;
822 elem_parse_failed
= true;
824 case WLAN_EID_OPMODE_NOTIF
:
826 elems
->opmode_notif
= pos
;
828 elem_parse_failed
= true;
830 case WLAN_EID_MESH_ID
:
831 elems
->mesh_id
= pos
;
832 elems
->mesh_id_len
= elen
;
834 case WLAN_EID_MESH_CONFIG
:
835 if (elen
>= sizeof(struct ieee80211_meshconf_ie
))
836 elems
->mesh_config
= (void *)pos
;
838 elem_parse_failed
= true;
840 case WLAN_EID_PEER_MGMT
:
841 elems
->peering
= pos
;
842 elems
->peering_len
= elen
;
844 case WLAN_EID_MESH_AWAKE_WINDOW
:
846 elems
->awake_window
= (void *)pos
;
850 elems
->preq_len
= elen
;
854 elems
->prep_len
= elen
;
858 elems
->perr_len
= elen
;
861 if (elen
>= sizeof(struct ieee80211_rann_ie
))
862 elems
->rann
= (void *)pos
;
864 elem_parse_failed
= true;
866 case WLAN_EID_CHANNEL_SWITCH
:
867 if (elen
!= sizeof(struct ieee80211_channel_sw_ie
)) {
868 elem_parse_failed
= true;
871 elems
->ch_switch_ie
= (void *)pos
;
873 case WLAN_EID_EXT_CHANSWITCH_ANN
:
874 if (elen
!= sizeof(struct ieee80211_ext_chansw_ie
)) {
875 elem_parse_failed
= true;
878 elems
->ext_chansw_ie
= (void *)pos
;
880 case WLAN_EID_SECONDARY_CHANNEL_OFFSET
:
881 if (elen
!= sizeof(struct ieee80211_sec_chan_offs_ie
)) {
882 elem_parse_failed
= true;
885 elems
->sec_chan_offs
= (void *)pos
;
887 case WLAN_EID_WIDE_BW_CHANNEL_SWITCH
:
889 elen
!= sizeof(*elems
->wide_bw_chansw_ie
)) {
890 elem_parse_failed
= true;
893 elems
->wide_bw_chansw_ie
= (void *)pos
;
895 case WLAN_EID_CHANNEL_SWITCH_WRAPPER
:
897 elem_parse_failed
= true;
901 * This is a bit tricky, but as we only care about
902 * the wide bandwidth channel switch element, so
903 * just parse it out manually.
905 ie
= cfg80211_find_ie(WLAN_EID_WIDE_BW_CHANNEL_SWITCH
,
908 if (ie
[1] == sizeof(*elems
->wide_bw_chansw_ie
))
909 elems
->wide_bw_chansw_ie
=
912 elem_parse_failed
= true;
915 case WLAN_EID_COUNTRY
:
916 elems
->country_elem
= pos
;
917 elems
->country_elem_len
= elen
;
919 case WLAN_EID_PWR_CONSTRAINT
:
921 elem_parse_failed
= true;
924 elems
->pwr_constr_elem
= pos
;
926 case WLAN_EID_TIMEOUT_INTERVAL
:
927 if (elen
>= sizeof(struct ieee80211_timeout_interval_ie
))
928 elems
->timeout_int
= (void *)pos
;
930 elem_parse_failed
= true;
936 if (elem_parse_failed
)
937 elems
->parse_error
= true;
939 __set_bit(id
, seen_elems
);
946 elems
->parse_error
= true;
951 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data
*sdata
,
954 struct ieee80211_local
*local
= sdata
->local
;
955 struct ieee80211_tx_queue_params qparam
;
956 struct ieee80211_chanctx_conf
*chanctx_conf
;
958 bool use_11b
, enable_qos
;
961 if (!local
->ops
->conf_tx
)
964 if (local
->hw
.queues
< IEEE80211_NUM_ACS
)
967 memset(&qparam
, 0, sizeof(qparam
));
970 chanctx_conf
= rcu_dereference(sdata
->vif
.chanctx_conf
);
971 use_11b
= (chanctx_conf
&&
972 chanctx_conf
->def
.chan
->band
== IEEE80211_BAND_2GHZ
) &&
973 !(sdata
->flags
& IEEE80211_SDATA_OPERATING_GMODE
);
977 * By default disable QoS in STA mode for old access points, which do
978 * not support 802.11e. New APs will provide proper queue parameters,
979 * that we will configure later.
981 enable_qos
= (sdata
->vif
.type
!= NL80211_IFTYPE_STATION
);
983 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++) {
984 /* Set defaults according to 802.11-2007 Table 7-37 */
993 case IEEE80211_AC_BK
:
994 qparam
.cw_max
= aCWmax
;
995 qparam
.cw_min
= aCWmin
;
999 /* never happens but let's not leave undefined */
1001 case IEEE80211_AC_BE
:
1002 qparam
.cw_max
= aCWmax
;
1003 qparam
.cw_min
= aCWmin
;
1007 case IEEE80211_AC_VI
:
1008 qparam
.cw_max
= aCWmin
;
1009 qparam
.cw_min
= (aCWmin
+ 1) / 2 - 1;
1011 qparam
.txop
= 6016/32;
1013 qparam
.txop
= 3008/32;
1016 case IEEE80211_AC_VO
:
1017 qparam
.cw_max
= (aCWmin
+ 1) / 2 - 1;
1018 qparam
.cw_min
= (aCWmin
+ 1) / 4 - 1;
1020 qparam
.txop
= 3264/32;
1022 qparam
.txop
= 1504/32;
1027 /* Confiure old 802.11b/g medium access rules. */
1028 qparam
.cw_max
= aCWmax
;
1029 qparam
.cw_min
= aCWmin
;
1034 qparam
.uapsd
= false;
1036 sdata
->tx_conf
[ac
] = qparam
;
1037 drv_conf_tx(local
, sdata
, ac
, &qparam
);
1040 if (sdata
->vif
.type
!= NL80211_IFTYPE_MONITOR
&&
1041 sdata
->vif
.type
!= NL80211_IFTYPE_P2P_DEVICE
) {
1042 sdata
->vif
.bss_conf
.qos
= enable_qos
;
1044 ieee80211_bss_info_change_notify(sdata
,
1049 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data
*sdata
,
1050 const size_t supp_rates_len
,
1051 const u8
*supp_rates
)
1053 struct ieee80211_chanctx_conf
*chanctx_conf
;
1054 int i
, have_higher_than_11mbit
= 0;
1056 /* cf. IEEE 802.11 9.2.12 */
1057 for (i
= 0; i
< supp_rates_len
; i
++)
1058 if ((supp_rates
[i
] & 0x7f) * 5 > 110)
1059 have_higher_than_11mbit
= 1;
1062 chanctx_conf
= rcu_dereference(sdata
->vif
.chanctx_conf
);
1065 chanctx_conf
->def
.chan
->band
== IEEE80211_BAND_2GHZ
&&
1066 have_higher_than_11mbit
)
1067 sdata
->flags
|= IEEE80211_SDATA_OPERATING_GMODE
;
1069 sdata
->flags
&= ~IEEE80211_SDATA_OPERATING_GMODE
;
1072 ieee80211_set_wmm_default(sdata
, true);
1075 void ieee80211_send_auth(struct ieee80211_sub_if_data
*sdata
,
1076 u16 transaction
, u16 auth_alg
, u16 status
,
1077 const u8
*extra
, size_t extra_len
, const u8
*da
,
1078 const u8
*bssid
, const u8
*key
, u8 key_len
, u8 key_idx
,
1081 struct ieee80211_local
*local
= sdata
->local
;
1082 struct sk_buff
*skb
;
1083 struct ieee80211_mgmt
*mgmt
;
1086 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+
1087 sizeof(*mgmt
) + 6 + extra_len
);
1091 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
1093 mgmt
= (struct ieee80211_mgmt
*) skb_put(skb
, 24 + 6);
1094 memset(mgmt
, 0, 24 + 6);
1095 mgmt
->frame_control
= cpu_to_le16(IEEE80211_FTYPE_MGMT
|
1096 IEEE80211_STYPE_AUTH
);
1097 memcpy(mgmt
->da
, da
, ETH_ALEN
);
1098 memcpy(mgmt
->sa
, sdata
->vif
.addr
, ETH_ALEN
);
1099 memcpy(mgmt
->bssid
, bssid
, ETH_ALEN
);
1100 mgmt
->u
.auth
.auth_alg
= cpu_to_le16(auth_alg
);
1101 mgmt
->u
.auth
.auth_transaction
= cpu_to_le16(transaction
);
1102 mgmt
->u
.auth
.status_code
= cpu_to_le16(status
);
1104 memcpy(skb_put(skb
, extra_len
), extra
, extra_len
);
1106 if (auth_alg
== WLAN_AUTH_SHARED_KEY
&& transaction
== 3) {
1107 mgmt
->frame_control
|= cpu_to_le16(IEEE80211_FCTL_PROTECTED
);
1108 err
= ieee80211_wep_encrypt(local
, skb
, key
, key_len
, key_idx
);
1112 IEEE80211_SKB_CB(skb
)->flags
|= IEEE80211_TX_INTFL_DONT_ENCRYPT
|
1114 ieee80211_tx_skb(sdata
, skb
);
1117 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data
*sdata
,
1118 const u8
*bssid
, u16 stype
, u16 reason
,
1119 bool send_frame
, u8
*frame_buf
)
1121 struct ieee80211_local
*local
= sdata
->local
;
1122 struct sk_buff
*skb
;
1123 struct ieee80211_mgmt
*mgmt
= (void *)frame_buf
;
1126 mgmt
->frame_control
= cpu_to_le16(IEEE80211_FTYPE_MGMT
| stype
);
1127 mgmt
->duration
= 0; /* initialize only */
1128 mgmt
->seq_ctrl
= 0; /* initialize only */
1129 memcpy(mgmt
->da
, bssid
, ETH_ALEN
);
1130 memcpy(mgmt
->sa
, sdata
->vif
.addr
, ETH_ALEN
);
1131 memcpy(mgmt
->bssid
, bssid
, ETH_ALEN
);
1132 /* u.deauth.reason_code == u.disassoc.reason_code */
1133 mgmt
->u
.deauth
.reason_code
= cpu_to_le16(reason
);
1136 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+
1137 IEEE80211_DEAUTH_FRAME_LEN
);
1141 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
1144 memcpy(skb_put(skb
, IEEE80211_DEAUTH_FRAME_LEN
),
1145 mgmt
, IEEE80211_DEAUTH_FRAME_LEN
);
1147 if (sdata
->vif
.type
!= NL80211_IFTYPE_STATION
||
1148 !(sdata
->u
.mgd
.flags
& IEEE80211_STA_MFP_ENABLED
))
1149 IEEE80211_SKB_CB(skb
)->flags
|=
1150 IEEE80211_TX_INTFL_DONT_ENCRYPT
;
1152 ieee80211_tx_skb(sdata
, skb
);
1156 int ieee80211_build_preq_ies(struct ieee80211_local
*local
, u8
*buffer
,
1157 size_t buffer_len
, const u8
*ie
, size_t ie_len
,
1158 enum ieee80211_band band
, u32 rate_mask
,
1161 struct ieee80211_supported_band
*sband
;
1162 u8
*pos
= buffer
, *end
= buffer
+ buffer_len
;
1163 size_t offset
= 0, noffset
;
1164 int supp_rates_len
, i
;
1169 sband
= local
->hw
.wiphy
->bands
[band
];
1170 if (WARN_ON_ONCE(!sband
))
1174 for (i
= 0; i
< sband
->n_bitrates
; i
++) {
1175 if ((BIT(i
) & rate_mask
) == 0)
1176 continue; /* skip rate */
1177 rates
[num_rates
++] = (u8
) (sband
->bitrates
[i
].bitrate
/ 5);
1180 supp_rates_len
= min_t(int, num_rates
, 8);
1182 if (end
- pos
< 2 + supp_rates_len
)
1184 *pos
++ = WLAN_EID_SUPP_RATES
;
1185 *pos
++ = supp_rates_len
;
1186 memcpy(pos
, rates
, supp_rates_len
);
1187 pos
+= supp_rates_len
;
1189 /* insert "request information" if in custom IEs */
1191 static const u8 before_extrates
[] = {
1193 WLAN_EID_SUPP_RATES
,
1196 noffset
= ieee80211_ie_split(ie
, ie_len
,
1198 ARRAY_SIZE(before_extrates
),
1200 if (end
- pos
< noffset
- offset
)
1202 memcpy(pos
, ie
+ offset
, noffset
- offset
);
1203 pos
+= noffset
- offset
;
1207 ext_rates_len
= num_rates
- supp_rates_len
;
1208 if (ext_rates_len
> 0) {
1209 if (end
- pos
< 2 + ext_rates_len
)
1211 *pos
++ = WLAN_EID_EXT_SUPP_RATES
;
1212 *pos
++ = ext_rates_len
;
1213 memcpy(pos
, rates
+ supp_rates_len
, ext_rates_len
);
1214 pos
+= ext_rates_len
;
1217 if (channel
&& sband
->band
== IEEE80211_BAND_2GHZ
) {
1220 *pos
++ = WLAN_EID_DS_PARAMS
;
1225 /* insert custom IEs that go before HT */
1227 static const u8 before_ht
[] = {
1229 WLAN_EID_SUPP_RATES
,
1231 WLAN_EID_EXT_SUPP_RATES
,
1233 WLAN_EID_SUPPORTED_REGULATORY_CLASSES
,
1235 noffset
= ieee80211_ie_split(ie
, ie_len
,
1236 before_ht
, ARRAY_SIZE(before_ht
),
1238 if (end
- pos
< noffset
- offset
)
1240 memcpy(pos
, ie
+ offset
, noffset
- offset
);
1241 pos
+= noffset
- offset
;
1245 if (sband
->ht_cap
.ht_supported
) {
1246 if (end
- pos
< 2 + sizeof(struct ieee80211_ht_cap
))
1248 pos
= ieee80211_ie_build_ht_cap(pos
, &sband
->ht_cap
,
1253 * If adding more here, adjust code in main.c
1254 * that calculates local->scan_ies_len.
1257 /* add any remaining custom IEs */
1260 if (end
- pos
< noffset
- offset
)
1262 memcpy(pos
, ie
+ offset
, noffset
- offset
);
1263 pos
+= noffset
- offset
;
1266 if (sband
->vht_cap
.vht_supported
) {
1267 if (end
- pos
< 2 + sizeof(struct ieee80211_vht_cap
))
1269 pos
= ieee80211_ie_build_vht_cap(pos
, &sband
->vht_cap
,
1270 sband
->vht_cap
.cap
);
1273 return pos
- buffer
;
1275 WARN_ONCE(1, "not enough space for preq IEs\n");
1276 return pos
- buffer
;
1279 struct sk_buff
*ieee80211_build_probe_req(struct ieee80211_sub_if_data
*sdata
,
1280 u8
*dst
, u32 ratemask
,
1281 struct ieee80211_channel
*chan
,
1282 const u8
*ssid
, size_t ssid_len
,
1283 const u8
*ie
, size_t ie_len
,
1286 struct ieee80211_local
*local
= sdata
->local
;
1287 struct sk_buff
*skb
;
1288 struct ieee80211_mgmt
*mgmt
;
1293 * Do not send DS Channel parameter for directed probe requests
1294 * in order to maximize the chance that we get a response. Some
1295 * badly-behaved APs don't respond when this parameter is included.
1300 chan_no
= ieee80211_frequency_to_channel(chan
->center_freq
);
1302 skb
= ieee80211_probereq_get(&local
->hw
, &sdata
->vif
,
1303 ssid
, ssid_len
, 100 + ie_len
);
1307 ies_len
= ieee80211_build_preq_ies(local
, skb_tail_pointer(skb
),
1309 ie
, ie_len
, chan
->band
,
1311 skb_put(skb
, ies_len
);
1314 mgmt
= (struct ieee80211_mgmt
*) skb
->data
;
1315 memcpy(mgmt
->da
, dst
, ETH_ALEN
);
1316 memcpy(mgmt
->bssid
, dst
, ETH_ALEN
);
1319 IEEE80211_SKB_CB(skb
)->flags
|= IEEE80211_TX_INTFL_DONT_ENCRYPT
;
1324 void ieee80211_send_probe_req(struct ieee80211_sub_if_data
*sdata
, u8
*dst
,
1325 const u8
*ssid
, size_t ssid_len
,
1326 const u8
*ie
, size_t ie_len
,
1327 u32 ratemask
, bool directed
, u32 tx_flags
,
1328 struct ieee80211_channel
*channel
, bool scan
)
1330 struct sk_buff
*skb
;
1332 skb
= ieee80211_build_probe_req(sdata
, dst
, ratemask
, channel
,
1334 ie
, ie_len
, directed
);
1336 IEEE80211_SKB_CB(skb
)->flags
|= tx_flags
;
1338 ieee80211_tx_skb_tid_band(sdata
, skb
, 7, channel
->band
);
1340 ieee80211_tx_skb(sdata
, skb
);
1344 u32
ieee80211_sta_get_rates(struct ieee80211_local
*local
,
1345 struct ieee802_11_elems
*elems
,
1346 enum ieee80211_band band
, u32
*basic_rates
)
1348 struct ieee80211_supported_band
*sband
;
1349 struct ieee80211_rate
*bitrates
;
1353 sband
= local
->hw
.wiphy
->bands
[band
];
1355 if (WARN_ON(!sband
))
1358 bitrates
= sband
->bitrates
;
1359 num_rates
= sband
->n_bitrates
;
1361 for (i
= 0; i
< elems
->supp_rates_len
+
1362 elems
->ext_supp_rates_len
; i
++) {
1366 if (i
< elems
->supp_rates_len
)
1367 rate
= elems
->supp_rates
[i
];
1368 else if (elems
->ext_supp_rates
)
1369 rate
= elems
->ext_supp_rates
1370 [i
- elems
->supp_rates_len
];
1371 own_rate
= 5 * (rate
& 0x7f);
1372 is_basic
= !!(rate
& 0x80);
1374 if (is_basic
&& (rate
& 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY
)
1377 for (j
= 0; j
< num_rates
; j
++) {
1378 if (bitrates
[j
].bitrate
== own_rate
) {
1379 supp_rates
|= BIT(j
);
1380 if (basic_rates
&& is_basic
)
1381 *basic_rates
|= BIT(j
);
1388 void ieee80211_stop_device(struct ieee80211_local
*local
)
1390 ieee80211_led_radio(local
, false);
1391 ieee80211_mod_tpt_led_trig(local
, 0, IEEE80211_TPT_LEDTRIG_FL_RADIO
);
1393 cancel_work_sync(&local
->reconfig_filter
);
1395 flush_workqueue(local
->workqueue
);
1399 static void ieee80211_assign_chanctx(struct ieee80211_local
*local
,
1400 struct ieee80211_sub_if_data
*sdata
)
1402 struct ieee80211_chanctx_conf
*conf
;
1403 struct ieee80211_chanctx
*ctx
;
1405 if (!local
->use_chanctx
)
1408 mutex_lock(&local
->chanctx_mtx
);
1409 conf
= rcu_dereference_protected(sdata
->vif
.chanctx_conf
,
1410 lockdep_is_held(&local
->chanctx_mtx
));
1412 ctx
= container_of(conf
, struct ieee80211_chanctx
, conf
);
1413 drv_assign_vif_chanctx(local
, sdata
, ctx
);
1415 mutex_unlock(&local
->chanctx_mtx
);
1418 int ieee80211_reconfig(struct ieee80211_local
*local
)
1420 struct ieee80211_hw
*hw
= &local
->hw
;
1421 struct ieee80211_sub_if_data
*sdata
;
1422 struct ieee80211_chanctx
*ctx
;
1423 struct sta_info
*sta
;
1425 bool reconfig_due_to_wowlan
= false;
1428 if (local
->suspended
)
1429 local
->resuming
= true;
1431 if (local
->wowlan
) {
1432 local
->wowlan
= false;
1433 res
= drv_resume(local
);
1435 local
->resuming
= false;
1442 * res is 1, which means the driver requested
1443 * to go through a regular reset on wakeup.
1445 reconfig_due_to_wowlan
= true;
1448 /* everything else happens only if HW was up & running */
1449 if (!local
->open_count
)
1453 * Upon resume hardware can sometimes be goofy due to
1454 * various platform / driver / bus issues, so restarting
1455 * the device may at times not work immediately. Propagate
1458 res
= drv_start(local
);
1460 WARN(local
->suspended
, "Hardware became unavailable "
1461 "upon resume. This could be a software issue "
1462 "prior to suspend or a hardware issue.\n");
1466 /* setup fragmentation threshold */
1467 drv_set_frag_threshold(local
, hw
->wiphy
->frag_threshold
);
1469 /* setup RTS threshold */
1470 drv_set_rts_threshold(local
, hw
->wiphy
->rts_threshold
);
1472 /* reset coverage class */
1473 drv_set_coverage_class(local
, hw
->wiphy
->coverage_class
);
1475 ieee80211_led_radio(local
, true);
1476 ieee80211_mod_tpt_led_trig(local
,
1477 IEEE80211_TPT_LEDTRIG_FL_RADIO
, 0);
1479 /* add interfaces */
1480 sdata
= rtnl_dereference(local
->monitor_sdata
);
1482 /* in HW restart it exists already */
1483 WARN_ON(local
->resuming
);
1484 res
= drv_add_interface(local
, sdata
);
1486 rcu_assign_pointer(local
->monitor_sdata
, NULL
);
1492 list_for_each_entry(sdata
, &local
->interfaces
, list
) {
1493 if (sdata
->vif
.type
!= NL80211_IFTYPE_AP_VLAN
&&
1494 sdata
->vif
.type
!= NL80211_IFTYPE_MONITOR
&&
1495 ieee80211_sdata_running(sdata
))
1496 res
= drv_add_interface(local
, sdata
);
1499 /* add channel contexts */
1500 if (local
->use_chanctx
) {
1501 mutex_lock(&local
->chanctx_mtx
);
1502 list_for_each_entry(ctx
, &local
->chanctx_list
, list
)
1503 WARN_ON(drv_add_chanctx(local
, ctx
));
1504 mutex_unlock(&local
->chanctx_mtx
);
1507 list_for_each_entry(sdata
, &local
->interfaces
, list
) {
1508 if (!ieee80211_sdata_running(sdata
))
1510 ieee80211_assign_chanctx(local
, sdata
);
1513 sdata
= rtnl_dereference(local
->monitor_sdata
);
1514 if (sdata
&& ieee80211_sdata_running(sdata
))
1515 ieee80211_assign_chanctx(local
, sdata
);
1518 mutex_lock(&local
->sta_mtx
);
1519 list_for_each_entry(sta
, &local
->sta_list
, list
) {
1520 enum ieee80211_sta_state state
;
1525 /* AP-mode stations will be added later */
1526 if (sta
->sdata
->vif
.type
== NL80211_IFTYPE_AP
)
1529 for (state
= IEEE80211_STA_NOTEXIST
;
1530 state
< sta
->sta_state
; state
++)
1531 WARN_ON(drv_sta_state(local
, sta
->sdata
, sta
, state
,
1534 mutex_unlock(&local
->sta_mtx
);
1536 /* reconfigure tx conf */
1537 if (hw
->queues
>= IEEE80211_NUM_ACS
) {
1538 list_for_each_entry(sdata
, &local
->interfaces
, list
) {
1539 if (sdata
->vif
.type
== NL80211_IFTYPE_AP_VLAN
||
1540 sdata
->vif
.type
== NL80211_IFTYPE_MONITOR
||
1541 !ieee80211_sdata_running(sdata
))
1544 for (i
= 0; i
< IEEE80211_NUM_ACS
; i
++)
1545 drv_conf_tx(local
, sdata
, i
,
1546 &sdata
->tx_conf
[i
]);
1550 /* reconfigure hardware */
1551 ieee80211_hw_config(local
, ~0);
1553 ieee80211_configure_filter(local
);
1555 /* Finally also reconfigure all the BSS information */
1556 list_for_each_entry(sdata
, &local
->interfaces
, list
) {
1559 if (!ieee80211_sdata_running(sdata
))
1562 /* common change flags for all interface types */
1563 changed
= BSS_CHANGED_ERP_CTS_PROT
|
1564 BSS_CHANGED_ERP_PREAMBLE
|
1565 BSS_CHANGED_ERP_SLOT
|
1567 BSS_CHANGED_BASIC_RATES
|
1568 BSS_CHANGED_BEACON_INT
|
1573 BSS_CHANGED_TXPOWER
;
1575 switch (sdata
->vif
.type
) {
1576 case NL80211_IFTYPE_STATION
:
1577 changed
|= BSS_CHANGED_ASSOC
|
1578 BSS_CHANGED_ARP_FILTER
|
1581 if (sdata
->u
.mgd
.dtim_period
)
1582 changed
|= BSS_CHANGED_DTIM_PERIOD
;
1584 mutex_lock(&sdata
->u
.mgd
.mtx
);
1585 ieee80211_bss_info_change_notify(sdata
, changed
);
1586 mutex_unlock(&sdata
->u
.mgd
.mtx
);
1588 case NL80211_IFTYPE_ADHOC
:
1589 changed
|= BSS_CHANGED_IBSS
;
1591 case NL80211_IFTYPE_AP
:
1592 changed
|= BSS_CHANGED_SSID
| BSS_CHANGED_P2P_PS
;
1594 if (sdata
->vif
.type
== NL80211_IFTYPE_AP
) {
1595 changed
|= BSS_CHANGED_AP_PROBE_RESP
;
1597 if (rcu_access_pointer(sdata
->u
.ap
.beacon
))
1598 drv_start_ap(local
, sdata
);
1602 case NL80211_IFTYPE_MESH_POINT
:
1603 if (sdata
->vif
.bss_conf
.enable_beacon
) {
1604 changed
|= BSS_CHANGED_BEACON
|
1605 BSS_CHANGED_BEACON_ENABLED
;
1606 ieee80211_bss_info_change_notify(sdata
, changed
);
1609 case NL80211_IFTYPE_WDS
:
1611 case NL80211_IFTYPE_AP_VLAN
:
1612 case NL80211_IFTYPE_MONITOR
:
1613 /* ignore virtual */
1615 case NL80211_IFTYPE_P2P_DEVICE
:
1616 changed
= BSS_CHANGED_IDLE
;
1618 case NL80211_IFTYPE_UNSPECIFIED
:
1619 case NUM_NL80211_IFTYPES
:
1620 case NL80211_IFTYPE_P2P_CLIENT
:
1621 case NL80211_IFTYPE_P2P_GO
:
1627 ieee80211_recalc_ps(local
, -1);
1630 * The sta might be in psm against the ap (e.g. because
1631 * this was the state before a hw restart), so we
1632 * explicitly send a null packet in order to make sure
1633 * it'll sync against the ap (and get out of psm).
1635 if (!(local
->hw
.conf
.flags
& IEEE80211_CONF_PS
)) {
1636 list_for_each_entry(sdata
, &local
->interfaces
, list
) {
1637 if (sdata
->vif
.type
!= NL80211_IFTYPE_STATION
)
1639 if (!sdata
->u
.mgd
.associated
)
1642 ieee80211_send_nullfunc(local
, sdata
, 0);
1646 /* APs are now beaconing, add back stations */
1647 mutex_lock(&local
->sta_mtx
);
1648 list_for_each_entry(sta
, &local
->sta_list
, list
) {
1649 enum ieee80211_sta_state state
;
1654 if (sta
->sdata
->vif
.type
!= NL80211_IFTYPE_AP
)
1657 for (state
= IEEE80211_STA_NOTEXIST
;
1658 state
< sta
->sta_state
; state
++)
1659 WARN_ON(drv_sta_state(local
, sta
->sdata
, sta
, state
,
1662 mutex_unlock(&local
->sta_mtx
);
1665 list_for_each_entry(sdata
, &local
->interfaces
, list
)
1666 if (ieee80211_sdata_running(sdata
))
1667 ieee80211_enable_keys(sdata
);
1670 local
->in_reconfig
= false;
1673 if (local
->monitors
== local
->open_count
&& local
->monitors
> 0)
1674 ieee80211_add_virtual_monitor(local
);
1677 * Clear the WLAN_STA_BLOCK_BA flag so new aggregation
1678 * sessions can be established after a resume.
1680 * Also tear down aggregation sessions since reconfiguring
1681 * them in a hardware restart scenario is not easily done
1682 * right now, and the hardware will have lost information
1683 * about the sessions, but we and the AP still think they
1684 * are active. This is really a workaround though.
1686 if (hw
->flags
& IEEE80211_HW_AMPDU_AGGREGATION
) {
1687 mutex_lock(&local
->sta_mtx
);
1689 list_for_each_entry(sta
, &local
->sta_list
, list
) {
1690 ieee80211_sta_tear_down_BA_sessions(
1691 sta
, AGG_STOP_LOCAL_REQUEST
);
1692 clear_sta_flag(sta
, WLAN_STA_BLOCK_BA
);
1695 mutex_unlock(&local
->sta_mtx
);
1698 ieee80211_wake_queues_by_reason(hw
, IEEE80211_MAX_QUEUE_MAP
,
1699 IEEE80211_QUEUE_STOP_REASON_SUSPEND
);
1702 * If this is for hw restart things are still running.
1703 * We may want to change that later, however.
1705 if (!local
->suspended
|| reconfig_due_to_wowlan
)
1706 drv_restart_complete(local
);
1708 if (!local
->suspended
)
1712 /* first set suspended false, then resuming */
1713 local
->suspended
= false;
1715 local
->resuming
= false;
1717 list_for_each_entry(sdata
, &local
->interfaces
, list
) {
1718 if (!ieee80211_sdata_running(sdata
))
1720 if (sdata
->vif
.type
== NL80211_IFTYPE_STATION
)
1721 ieee80211_sta_restart(sdata
);
1724 mod_timer(&local
->sta_cleanup
, jiffies
+ 1);
1731 void ieee80211_resume_disconnect(struct ieee80211_vif
*vif
)
1733 struct ieee80211_sub_if_data
*sdata
;
1734 struct ieee80211_local
*local
;
1735 struct ieee80211_key
*key
;
1740 sdata
= vif_to_sdata(vif
);
1741 local
= sdata
->local
;
1743 if (WARN_ON(!local
->resuming
))
1746 if (WARN_ON(vif
->type
!= NL80211_IFTYPE_STATION
))
1749 sdata
->flags
|= IEEE80211_SDATA_DISCONNECT_RESUME
;
1751 mutex_lock(&local
->key_mtx
);
1752 list_for_each_entry(key
, &sdata
->key_list
, list
)
1753 key
->flags
|= KEY_FLAG_TAINTED
;
1754 mutex_unlock(&local
->key_mtx
);
1756 EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect
);
1758 void ieee80211_recalc_smps(struct ieee80211_sub_if_data
*sdata
)
1760 struct ieee80211_local
*local
= sdata
->local
;
1761 struct ieee80211_chanctx_conf
*chanctx_conf
;
1762 struct ieee80211_chanctx
*chanctx
;
1764 mutex_lock(&local
->chanctx_mtx
);
1766 chanctx_conf
= rcu_dereference_protected(sdata
->vif
.chanctx_conf
,
1767 lockdep_is_held(&local
->chanctx_mtx
));
1769 if (WARN_ON_ONCE(!chanctx_conf
))
1772 chanctx
= container_of(chanctx_conf
, struct ieee80211_chanctx
, conf
);
1773 ieee80211_recalc_smps_chanctx(local
, chanctx
);
1775 mutex_unlock(&local
->chanctx_mtx
);
1778 static bool ieee80211_id_in_list(const u8
*ids
, int n_ids
, u8 id
)
1782 for (i
= 0; i
< n_ids
; i
++)
1789 * ieee80211_ie_split - split an IE buffer according to ordering
1791 * @ies: the IE buffer
1792 * @ielen: the length of the IE buffer
1793 * @ids: an array with element IDs that are allowed before
1795 * @n_ids: the size of the element ID array
1796 * @offset: offset where to start splitting in the buffer
1798 * This function splits an IE buffer by updating the @offset
1799 * variable to point to the location where the buffer should be
1802 * It assumes that the given IE buffer is well-formed, this
1803 * has to be guaranteed by the caller!
1805 * It also assumes that the IEs in the buffer are ordered
1806 * correctly, if not the result of using this function will not
1807 * be ordered correctly either, i.e. it does no reordering.
1809 * The function returns the offset where the next part of the
1810 * buffer starts, which may be @ielen if the entire (remainder)
1811 * of the buffer should be used.
1813 size_t ieee80211_ie_split(const u8
*ies
, size_t ielen
,
1814 const u8
*ids
, int n_ids
, size_t offset
)
1816 size_t pos
= offset
;
1818 while (pos
< ielen
&& ieee80211_id_in_list(ids
, n_ids
, ies
[pos
]))
1819 pos
+= 2 + ies
[pos
+ 1];
1824 size_t ieee80211_ie_split_vendor(const u8
*ies
, size_t ielen
, size_t offset
)
1826 size_t pos
= offset
;
1828 while (pos
< ielen
&& ies
[pos
] != WLAN_EID_VENDOR_SPECIFIC
)
1829 pos
+= 2 + ies
[pos
+ 1];
1834 static void _ieee80211_enable_rssi_reports(struct ieee80211_sub_if_data
*sdata
,
1838 trace_api_enable_rssi_reports(sdata
, rssi_min_thold
, rssi_max_thold
);
1840 if (WARN_ON(sdata
->vif
.type
!= NL80211_IFTYPE_STATION
))
1844 * Scale up threshold values before storing it, as the RSSI averaging
1845 * algorithm uses a scaled up value as well. Change this scaling
1846 * factor if the RSSI averaging algorithm changes.
1848 sdata
->u
.mgd
.rssi_min_thold
= rssi_min_thold
*16;
1849 sdata
->u
.mgd
.rssi_max_thold
= rssi_max_thold
*16;
1852 void ieee80211_enable_rssi_reports(struct ieee80211_vif
*vif
,
1856 struct ieee80211_sub_if_data
*sdata
= vif_to_sdata(vif
);
1858 WARN_ON(rssi_min_thold
== rssi_max_thold
||
1859 rssi_min_thold
> rssi_max_thold
);
1861 _ieee80211_enable_rssi_reports(sdata
, rssi_min_thold
,
1864 EXPORT_SYMBOL(ieee80211_enable_rssi_reports
);
1866 void ieee80211_disable_rssi_reports(struct ieee80211_vif
*vif
)
1868 struct ieee80211_sub_if_data
*sdata
= vif_to_sdata(vif
);
1870 _ieee80211_enable_rssi_reports(sdata
, 0, 0);
1872 EXPORT_SYMBOL(ieee80211_disable_rssi_reports
);
1874 u8
*ieee80211_ie_build_ht_cap(u8
*pos
, struct ieee80211_sta_ht_cap
*ht_cap
,
1879 *pos
++ = WLAN_EID_HT_CAPABILITY
;
1880 *pos
++ = sizeof(struct ieee80211_ht_cap
);
1881 memset(pos
, 0, sizeof(struct ieee80211_ht_cap
));
1883 /* capability flags */
1884 tmp
= cpu_to_le16(cap
);
1885 memcpy(pos
, &tmp
, sizeof(u16
));
1888 /* AMPDU parameters */
1889 *pos
++ = ht_cap
->ampdu_factor
|
1890 (ht_cap
->ampdu_density
<<
1891 IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT
);
1894 memcpy(pos
, &ht_cap
->mcs
, sizeof(ht_cap
->mcs
));
1895 pos
+= sizeof(ht_cap
->mcs
);
1897 /* extended capabilities */
1898 pos
+= sizeof(__le16
);
1900 /* BF capabilities */
1901 pos
+= sizeof(__le32
);
1903 /* antenna selection */
1909 u8
*ieee80211_ie_build_vht_cap(u8
*pos
, struct ieee80211_sta_vht_cap
*vht_cap
,
1914 *pos
++ = WLAN_EID_VHT_CAPABILITY
;
1915 *pos
++ = sizeof(struct ieee80211_vht_cap
);
1916 memset(pos
, 0, sizeof(struct ieee80211_vht_cap
));
1918 /* capability flags */
1919 tmp
= cpu_to_le32(cap
);
1920 memcpy(pos
, &tmp
, sizeof(u32
));
1924 memcpy(pos
, &vht_cap
->vht_mcs
, sizeof(vht_cap
->vht_mcs
));
1925 pos
+= sizeof(vht_cap
->vht_mcs
);
1930 u8
*ieee80211_ie_build_ht_oper(u8
*pos
, struct ieee80211_sta_ht_cap
*ht_cap
,
1931 const struct cfg80211_chan_def
*chandef
,
1934 struct ieee80211_ht_operation
*ht_oper
;
1935 /* Build HT Information */
1936 *pos
++ = WLAN_EID_HT_OPERATION
;
1937 *pos
++ = sizeof(struct ieee80211_ht_operation
);
1938 ht_oper
= (struct ieee80211_ht_operation
*)pos
;
1939 ht_oper
->primary_chan
= ieee80211_frequency_to_channel(
1940 chandef
->chan
->center_freq
);
1941 switch (chandef
->width
) {
1942 case NL80211_CHAN_WIDTH_160
:
1943 case NL80211_CHAN_WIDTH_80P80
:
1944 case NL80211_CHAN_WIDTH_80
:
1945 case NL80211_CHAN_WIDTH_40
:
1946 if (chandef
->center_freq1
> chandef
->chan
->center_freq
)
1947 ht_oper
->ht_param
= IEEE80211_HT_PARAM_CHA_SEC_ABOVE
;
1949 ht_oper
->ht_param
= IEEE80211_HT_PARAM_CHA_SEC_BELOW
;
1952 ht_oper
->ht_param
= IEEE80211_HT_PARAM_CHA_SEC_NONE
;
1955 if (ht_cap
->cap
& IEEE80211_HT_CAP_SUP_WIDTH_20_40
&&
1956 chandef
->width
!= NL80211_CHAN_WIDTH_20_NOHT
&&
1957 chandef
->width
!= NL80211_CHAN_WIDTH_20
)
1958 ht_oper
->ht_param
|= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY
;
1960 ht_oper
->operation_mode
= cpu_to_le16(prot_mode
);
1961 ht_oper
->stbc_param
= 0x0000;
1963 /* It seems that Basic MCS set and Supported MCS set
1964 are identical for the first 10 bytes */
1965 memset(&ht_oper
->basic_set
, 0, 16);
1966 memcpy(&ht_oper
->basic_set
, &ht_cap
->mcs
, 10);
1968 return pos
+ sizeof(struct ieee80211_ht_operation
);
1971 void ieee80211_ht_oper_to_chandef(struct ieee80211_channel
*control_chan
,
1972 const struct ieee80211_ht_operation
*ht_oper
,
1973 struct cfg80211_chan_def
*chandef
)
1975 enum nl80211_channel_type channel_type
;
1978 cfg80211_chandef_create(chandef
, control_chan
,
1979 NL80211_CHAN_NO_HT
);
1983 switch (ht_oper
->ht_param
& IEEE80211_HT_PARAM_CHA_SEC_OFFSET
) {
1984 case IEEE80211_HT_PARAM_CHA_SEC_NONE
:
1985 channel_type
= NL80211_CHAN_HT20
;
1987 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE
:
1988 channel_type
= NL80211_CHAN_HT40PLUS
;
1990 case IEEE80211_HT_PARAM_CHA_SEC_BELOW
:
1991 channel_type
= NL80211_CHAN_HT40MINUS
;
1994 channel_type
= NL80211_CHAN_NO_HT
;
1997 cfg80211_chandef_create(chandef
, control_chan
, channel_type
);
2000 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data
*sdata
,
2001 struct sk_buff
*skb
, bool need_basic
,
2002 enum ieee80211_band band
)
2004 struct ieee80211_local
*local
= sdata
->local
;
2005 struct ieee80211_supported_band
*sband
;
2008 u32 basic_rates
= sdata
->vif
.bss_conf
.basic_rates
;
2010 sband
= local
->hw
.wiphy
->bands
[band
];
2011 rates
= sband
->n_bitrates
;
2015 if (skb_tailroom(skb
) < rates
+ 2)
2018 pos
= skb_put(skb
, rates
+ 2);
2019 *pos
++ = WLAN_EID_SUPP_RATES
;
2021 for (i
= 0; i
< rates
; i
++) {
2023 if (need_basic
&& basic_rates
& BIT(i
))
2025 rate
= sband
->bitrates
[i
].bitrate
;
2026 *pos
++ = basic
| (u8
) (rate
/ 5);
2032 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data
*sdata
,
2033 struct sk_buff
*skb
, bool need_basic
,
2034 enum ieee80211_band band
)
2036 struct ieee80211_local
*local
= sdata
->local
;
2037 struct ieee80211_supported_band
*sband
;
2039 u8 i
, exrates
, *pos
;
2040 u32 basic_rates
= sdata
->vif
.bss_conf
.basic_rates
;
2042 sband
= local
->hw
.wiphy
->bands
[band
];
2043 exrates
= sband
->n_bitrates
;
2049 if (skb_tailroom(skb
) < exrates
+ 2)
2053 pos
= skb_put(skb
, exrates
+ 2);
2054 *pos
++ = WLAN_EID_EXT_SUPP_RATES
;
2056 for (i
= 8; i
< sband
->n_bitrates
; i
++) {
2058 if (need_basic
&& basic_rates
& BIT(i
))
2060 rate
= sband
->bitrates
[i
].bitrate
;
2061 *pos
++ = basic
| (u8
) (rate
/ 5);
2067 int ieee80211_ave_rssi(struct ieee80211_vif
*vif
)
2069 struct ieee80211_sub_if_data
*sdata
= vif_to_sdata(vif
);
2070 struct ieee80211_if_managed
*ifmgd
= &sdata
->u
.mgd
;
2072 if (WARN_ON_ONCE(sdata
->vif
.type
!= NL80211_IFTYPE_STATION
)) {
2073 /* non-managed type inferfaces */
2076 return ifmgd
->ave_beacon_signal
/ 16;
2078 EXPORT_SYMBOL_GPL(ieee80211_ave_rssi
);
2080 u8
ieee80211_mcs_to_chains(const struct ieee80211_mcs_info
*mcs
)
2085 /* TODO: consider rx_highest */
2087 if (mcs
->rx_mask
[3])
2089 if (mcs
->rx_mask
[2])
2091 if (mcs
->rx_mask
[1])
2097 * ieee80211_calculate_rx_timestamp - calculate timestamp in frame
2098 * @local: mac80211 hw info struct
2099 * @status: RX status
2100 * @mpdu_len: total MPDU length (including FCS)
2101 * @mpdu_offset: offset into MPDU to calculate timestamp at
2103 * This function calculates the RX timestamp at the given MPDU offset, taking
2104 * into account what the RX timestamp was. An offset of 0 will just normalize
2105 * the timestamp to TSF at beginning of MPDU reception.
2107 u64
ieee80211_calculate_rx_timestamp(struct ieee80211_local
*local
,
2108 struct ieee80211_rx_status
*status
,
2109 unsigned int mpdu_len
,
2110 unsigned int mpdu_offset
)
2112 u64 ts
= status
->mactime
;
2113 struct rate_info ri
;
2116 if (WARN_ON(!ieee80211_have_rx_timestamp(status
)))
2119 memset(&ri
, 0, sizeof(ri
));
2121 /* Fill cfg80211 rate info */
2122 if (status
->flag
& RX_FLAG_HT
) {
2123 ri
.mcs
= status
->rate_idx
;
2124 ri
.flags
|= RATE_INFO_FLAGS_MCS
;
2125 if (status
->flag
& RX_FLAG_40MHZ
)
2126 ri
.flags
|= RATE_INFO_FLAGS_40_MHZ_WIDTH
;
2127 if (status
->flag
& RX_FLAG_SHORT_GI
)
2128 ri
.flags
|= RATE_INFO_FLAGS_SHORT_GI
;
2129 } else if (status
->flag
& RX_FLAG_VHT
) {
2130 ri
.flags
|= RATE_INFO_FLAGS_VHT_MCS
;
2131 ri
.mcs
= status
->rate_idx
;
2132 ri
.nss
= status
->vht_nss
;
2133 if (status
->flag
& RX_FLAG_40MHZ
)
2134 ri
.flags
|= RATE_INFO_FLAGS_40_MHZ_WIDTH
;
2135 if (status
->flag
& RX_FLAG_80MHZ
)
2136 ri
.flags
|= RATE_INFO_FLAGS_80_MHZ_WIDTH
;
2137 if (status
->flag
& RX_FLAG_80P80MHZ
)
2138 ri
.flags
|= RATE_INFO_FLAGS_80P80_MHZ_WIDTH
;
2139 if (status
->flag
& RX_FLAG_160MHZ
)
2140 ri
.flags
|= RATE_INFO_FLAGS_160_MHZ_WIDTH
;
2141 if (status
->flag
& RX_FLAG_SHORT_GI
)
2142 ri
.flags
|= RATE_INFO_FLAGS_SHORT_GI
;
2144 struct ieee80211_supported_band
*sband
;
2146 sband
= local
->hw
.wiphy
->bands
[status
->band
];
2147 ri
.legacy
= sband
->bitrates
[status
->rate_idx
].bitrate
;
2150 rate
= cfg80211_calculate_bitrate(&ri
);
2152 /* rewind from end of MPDU */
2153 if (status
->flag
& RX_FLAG_MACTIME_END
)
2154 ts
-= mpdu_len
* 8 * 10 / rate
;
2156 ts
+= mpdu_offset
* 8 * 10 / rate
;
2161 void ieee80211_dfs_cac_cancel(struct ieee80211_local
*local
)
2163 struct ieee80211_sub_if_data
*sdata
;
2165 mutex_lock(&local
->iflist_mtx
);
2166 list_for_each_entry(sdata
, &local
->interfaces
, list
) {
2167 cancel_delayed_work_sync(&sdata
->dfs_cac_timer_work
);
2169 if (sdata
->wdev
.cac_started
) {
2170 ieee80211_vif_release_channel(sdata
);
2171 cfg80211_cac_event(sdata
->dev
,
2172 NL80211_RADAR_CAC_ABORTED
,
2176 mutex_unlock(&local
->iflist_mtx
);
2179 void ieee80211_dfs_radar_detected_work(struct work_struct
*work
)
2181 struct ieee80211_local
*local
=
2182 container_of(work
, struct ieee80211_local
, radar_detected_work
);
2183 struct cfg80211_chan_def chandef
;
2185 ieee80211_dfs_cac_cancel(local
);
2187 if (local
->use_chanctx
)
2188 /* currently not handled */
2191 chandef
= local
->hw
.conf
.chandef
;
2192 cfg80211_radar_event(local
->hw
.wiphy
, &chandef
, GFP_KERNEL
);
2196 void ieee80211_radar_detected(struct ieee80211_hw
*hw
)
2198 struct ieee80211_local
*local
= hw_to_local(hw
);
2200 trace_api_radar_detected(local
);
2202 ieee80211_queue_work(hw
, &local
->radar_detected_work
);
2204 EXPORT_SYMBOL(ieee80211_radar_detected
);